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Home >> Hyundai >> 2020 >> Sonata SEL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Charging System - 1.6L (Except HEV)) >> Battery >> Repair Procedures >> Inspection >> Battery Test Procedure

Battery Test Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Connect the tester to the battery.
    • Red clamp to positive (+) battery terminal
    • Black clamp to negative (-) battery terminal
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    CAUTION:
    • Connect clamps securely. If "CHECK CONNECTION" message is displayed on the screen, reconnect clamps securely.
  2. The tester will ask if the battery is connected "IN-VEHICLE" or "OUT-OF-VEHICLE". Make your selection by pressing the arrow buttons; then press ENTER.
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  3. Select CCA and press the ENTER button.
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    NOTE:
    • CCA: Cold cranking amps, is an SAE specification for cranking batteries at -0.4°F (-18°C).
  4. Set the CCA value displayed on the screen to the CCA value marked on the battery label by pressing up and down buttons and pressing ENTER.
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    NOTE:
    • The battery ratings (CCA) displayed on the tester must be identical to the ratings marked on battery label.
  5. The tester will conduct battery test.
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  6. The tester displays battery test results including voltage and battery ratings.

    Refer to the following table and take the appropriate action as recommended by the Micro 570.

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    BATTERY TEST RESULTS DESCRIPTION

    Result On Printer Remedy
    GOOD BATTERY No action is required.
    GOOD - RECHARGE Battery is in a good state.
    Recharge the battery for use.
    • Follow the instruction below when charging and retesting the battery, otherwise the test result may be inaccurate. (See 'Charging and Retesting after charging battery' below.)
    CHARGE & RETEST Battery is not charged properly.
    • Charge and test the battery again.
    • Follow the instruction below when charging and retesting the battery, otherwise the test result may be inaccurate. (See 'Charging and Retesting after charging battery' below.)
    REPLACE BATTERY Replace battery and recheck the charging system.
    • Improper connection between battery and vehicle cables may prompt "REPLACE BATTERY" message. Retest the battery after removing cables and connecting the tester to the battery terminal directly prior to replacing the battery.
    BAD CELL-REPLACE Charge and retest the battery.
    • If "REPLACE BATTERY" is prompted on Micro 570, replace the battery and recheck the charging system.

    [Charging and Retesting after charging battery] 

    Charging battery 

    Set battery charger to 'Auto Mode' (the Mode that charging current drops as the battery charges) and charge battery until charging current drops down close to zero or the charger alerts with an alarm when charging is complete.

    (Minimum charging time recommended: More than 3 hours in Auto Mode explained above)

    • If battery is not fully charged, battery surface voltage will be high while the amount of current charged (CCA) in battery is low. If the battery is tested in this condition, the tester may misjudge that battery sulfation has occurred as the level of current in battery is too low in comparison with battery voltage.

      * Surface voltage: When battery is charged electrolyte temperature increases and chemical reaction become active resulting in an excessive increase of battery voltage.

      It is known that it takes approximate one day to subside this increased surface voltage completely.

    Testing battery after charging 

    Do not test the battery immediately after charging. Test the battery after the battery surface voltage has subsided as instructed in the following procedure.

    1. When battery charging is complete, install the battery to the vehicle.
    2. Turn IG ON, turn on the headlamps at low beam, and wait for 5 minutes. (Discharge for 5 minutes.)
    3. Turn off the headlamps at IG ON, and wait for 5 minutes. (Wait for 5 minutes.)
    4. Remove +, - cables from the battery and test battery.
      WARNING:
      • Whenever filing a claim for battery, the print out of the battery test results must be attached.

    Starter Test Procedure 

  7. After the battery test, press ENTER immediately for the starter test.
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  8. Start the engine.
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  9. Cranking voltage and starter test results will be displayed on the screen.

    Refer to the following table and take the appropriate action as recommended by the Micro 570.

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    STARTER TEST RESULTS DESCRIPTION

    Result On Printer Remedy
    CRANKING VOLTAGE NORMAL System shows a normal starter draw.
    CRANKING VOLTAGE LOW Cranking voltage is lower than normal level.
    • Check starter.
    CHARGE BATTERY The battery level is too low for the test.
    • Charge the battery and retest.
    REPLACE BATTERY Replace battery.
    • If the vehicle cannot be started even though "GOOD BATTERY" is displayed, check wiring for open circuit, battery cable connection and starter, and repair or replace as necessary.
    • If the engine does not crank, check fuel system.
    NOTE:
    • When testing a vehicle with an old diesel engine, the test result may not be favorable if the glow plug is not heated. Conduct the test after warming up the engine for 5 minutes.

    Charging System Test Procedure 

  10. Press ENTER to begin charging system test.
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  11. The tester displays the actual voltage of alternator.

    Press ENTER to continue.

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  12. Turn off all electrical loads and rev up the engine for 5 seconds by pressing the accelerator pedal. (Follow the instructions on the screen)
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  13. The message that engine RPM is detected will be displayed on the screen. Press ENTER to continue.
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  14. If the engine RPM is not detected, press ENTER after revving up the engine.
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  15. The tester will conduct charging system test during loads off.
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  16. Rev up the engine with the electrical loads on.
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  17. The tester will conduct charging system test during loads on.
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  18. Rev up the engine for 5 seconds by pressing the accelerator pedal. (Follow the instructions on the screen.)
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  19. The message that engine RPM is detected will be displayed on the screen. Press ENTER to continue.
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  20. If the engine RPM is not detected, press ENTER after revving up the engine.
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  21. Turn off electrical loads (air conditioner, lamps, audio and etc). Turn the engine off.
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  22. Charging voltage and charging system test results will be displayed on the screen.

    Shut off the engine and disconnect the tester clamps from the battery. Refer to the following table and take the appropriate action as recommended by the Micro 570.

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CHARGING SYSTEM TEST RESULTS DESCRIPTION

Result On Printer Remedy
CHARGING SYSTEM NORMAL/DIODE RIPPLE NORMAL Charging system is normal.
NO CHARGING VOLTAGE Alternator does not supply charging current to battery.
  • Check belts, connection between alternator and battery and replace belts, or cable or alternator as necessary.
LOW CHARGING VOLTAGE Alternator does not supply charging current to battery and electrical load to system fully.
  • Check belts and alternator and replace as necessary.
HIGH CHARGING VOLTAGE The voltage from alternator to battery is higher than normal limit during voltage regulation.
  • Check connection and ground and replace regulator as necessary.
  • Check electrolyte level in the battery.
EXCESS RIPPLE DETECTED One or more diodes in the alternator is not functioning properly.
  • Check alternator mounting and belts and replace as necessary.

The MDX-670P Analyzer 

The MDX-670P battery conductance and electrical system analyzer tests batteries as well as starting and charging systems of the vehicle.

It displays the test results in seconds and features a built-in printer to provide a copy of the results.

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CAUTION:
  1. Because of the possibility of personal injury, always use extreme caution and appropriate eye protection when working with batteries.
  2. When charging a battery based on test result, it must be fully charged. For an accurate test result, test the battery when the battery surface voltage has subsided completely after charging it. (Refer to Battery Test Results below.)
NOTE:
  • When testing a vehicle with an old diesel engine, the test result may not be favorable if the glow plug is not heated. Conduct the test after warming up the engine for 5 minutes.
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  1. Connect the red clamp to the positive (+) terminal and the black clamp to the negative (-) terminal.
    NOTE:
    • For a proper connection, rock the clamps back and forth. The tester requires that both sides of each clamp be firmly connected before testing. A poor connection may prompt CHECK CONNECTION or WIGGLE CLAMPS message. If the message appears, clean the terminals and reconnect the clamps.
  2. Scroll to and select IN VEHICLE or OUT OF VEHICLE for a battery not connected to a vehicle.
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    NOTE:
    • Following an IN VEHICLE test you will be prompted to test the starting and charging systems.
  3. Scroll to and select REGULAR FLOODED, AGM FLAT PLATE, or AGM SPIRAL where applicable.
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    NOTE:
    • For a vehicle equipped with ISG function, select the AGM FLAT PLATE.
  4. Scroll to and select the battery's rating system.
    NOTE:
    • In most cases, the CCA value is marked on the battery label, but sometimes it is substituted with the EN or SEA value. Select any of them.
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    • CCA: Cold Cranking Amps, as specified by SAE, is the most common rating for cranking batteries at 0°F (-17.8° C).
    • EN: Europe-Norm
    • SAE: Society of Automotive Engineers, the European labeling of CCA
  5. Set the selected rating value displayed on the screen to the value marked on the battery label by pressing up and down arrow buttons.
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  6. Press ENTER to start test.
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  7. After several seconds, the tester will display the battery condition and the measured voltage. The tester will also display the battery rating and the rating units.
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    BATTERY TEST RESULTS DESCRIPTION

    Result On Printer Remedy
    GOOD BATTERY No action is required.
    GOOD - RECHARGE Battery is in a good state. Recharge the battery for use.
    • Follow the instruction below when charging and retesting the battery, otherwise the test result may be inaccurate. (See 'Charging and Retesting after charging battery' below.)
    CHARGE & RETEST Battery is not charged properly.
    • Charge and test the battery again.
    • Follow the instruction below when charging and retesting the battery, otherwise the test result may be inaccurate. (See 'Charging and Retesting after charging battery' below.)
    REPLACE BATTERY Replace battery and recheck the charging system.
    • Improper connection between battery and vehicle cables may prompt "REPLACE BATTERY" message. Retest the battery after removing cables and connecting the tester to the battery terminal directly prior to replacing the battery.
    BAD CELL - REPLACE Charge and retest the battery.
    • If "REPLACE BATTERY" is prompted on MDX-670P Analyzer, replace the battery and recheck the charging system.

    [Charging and Retesting after charging battery] 

    Charging battery 

    Set battery charger to 'Auto Mode' (the Mode that charging current drops as the battery charges) and charge battery until charging current drops down close to zero or the charger alerts with an alarm when charging is complete.

    (Minimum charging time recommended: More than 3 hours in Auto Mode explained above)

    • If battery is not fully charged, battery surface voltage will be high while the amount of current charged (CCA) in battery is low. If the battery is tested in this condition, the tester may misjudge that battery sulfation has occurred as the level of current in battery is too low in comparison with battery voltage.

      * Surface voltage: When battery is charged, electrolyte temperature increases and chemical reaction becomes active resulting in an excessive increase in battery voltage.

      It is known that it takes approximate one day to subside this increased surface voltage completely.

    Testing battery after charging 

    Do not test the battery immediately after charging. Test the battery after the battery surface voltage has subsided as instructed in the following procedure.

    1. When battery charging is complete, install the battery to the vehicle.
    2. Turn IG ON, turn on the headlamps at low beam, and wait for 5 minutes. (Discharge for 5 minutes.)
    3. Turn off the headlamps at IG ON, and wait for 5 minutes. (Wait for 5 minutes.)
    4. Remove +, - cables from the battery and test battery.
      NOTE:
      • For an in-vehicle test, the display alternates between the test results and the message "PRESS FOR STARTER TEST".
      NOTE:
      • Before starting the test, inspect the alternator drive belt. A belt that is glazed or worn, or lacks the proper tension, will prevent the engine from achieving the RPM levels needed for the test.
  8. Press the ENTER button to proceed with the starter test.
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  9. Start the engine when prompted.
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  10. The tester displays the status of the starter system, cranking voltage, and cranking time in milliseconds.
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    STARTER TEST RESULTS DESCRIPTION

    Result On Printer Remedy
    CRANKING VOLTAGE NORMAL System shows a normal starter draw.
    CRANKING VOLTAGE LOW Cranking voltage is lower than normal level.
    • Check starter.
    CHARGE BATTERY The battery level is too low for the test.
    • Charge the battery and retest.
    REPLACE BATTERY Replace battery.
    • If the vehicle cannot be started even though "GOOD BATTERY" is displayed, check wiring for open circuit, battery cable connection and starter, and repair or replace as necessary.
    • If the engine does crank, check fuel system.
    NOTE:
    • For an in-vehicle test, the display alternates between the test results and the message "PRESS FOR CHARGING TEST".

    Step 3: Charging System Test 

  11. Press the ENTER button to proceed with the charging test.
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  12. Rev up the engine with loads off. (Following the on-screen prompts)
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  13. The message that engine RPM is detected will be displayed on the screen. Idle the engine.
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  14. Turn on electrical loads (air conditioner, lamps, audio and etc). Press ENTER to continue.
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  15. Turn on electrical loads (air conditioner, lamps, audio and etc). Press ENTER to continue.
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  16. The message that engine RPM is detected will be displayed on the screen. Idle the engine.
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  17. Turn off loads and engine.
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  18. The status of the Charging System is displayed at the end of the procedure.
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    Result On Printer Remedy
    NO PROBLEMS System is showing normal output from the alternator.
    NO OUTPUT No alternator output detected.
    • Check all connections to and from the alternator, especially the connection to the battery. If the connection is loose or heavily corroded, clean or replace the cable and retest.
    • If the belts and connections are in good working condition, replace the alternator. (Older vehicles use external voltage regulators, which may require replacement of the voltage regulator only.)
    LOW OUTPUT Alternator does not supply charging current to battery and electrical load to system fully.
    • Check belts and alternator and replace as necessary.
    HIGH OUTPUT The voltage from alternator to battery is higher than normal limit during voltage regulation.
    • Check connection and ground and replace regulator as necessary.
    • Check electrolyte level in the battery.
    EXCESSIVE RIPPLE The voltage from alternator to battery is higher than normal limit during voltage regulation.
    • Check alternator mounting and belts and replace as necessary.
    CHARGE BATTERY The starter voltage is low and the battery is discharged. Fully charge the battery and repeat the starter system test.
    REPLACE BATTERY Battery must be replaced before the starting system can be tested.
  19. Press the BACK/PRINT button to print the test results or MENU to return to the Options Menu.
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